Effects of emulsifier on particle size of a phase change material in a mixture with water

Technical Report · Sun Jun 30 00:00:00 EDT 1991

DOI:https://doi.org/10.2172/6792238· OSTI ID:6792238

Choi, E; Cho, Y I; Lorsch, H G

The use of a phase-change material (PCM) in a district cooling system was studied in order to increase the heat transfer performance of the system. One of the major technical obstacles to its use is the clogging of the piping system. The present study attempts to minimize the clogging problem by using an emulsifier. Effects of the emulsifier on the mixture of water and hexadecane (a PCM) were studied. A small amount (60 to 2775 ppm) of emulsifier caused remarkable effects resulting in the production of fine PCM particles. As the amount of the emulsifier was increased in the 25% hexadecane mixture with water, the size of the solid particles of hexadecane became smaller. When the size of the hexadecane particles was small enough, they did not stick together or stick to the surface of the cold wall of a heat exchanger.

• Research Organization: Drexel Univ., Philadelphia, PA (United States). Dept. of Mechanical Engineering and Mechanics
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: FG01-90CE26602
• OSTI ID: 6792238
• Report Number(s): DOE/CE/26602-3; ON: DE93013300
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
36 MATERIALS SCIENCE
DISTRICT COOLING
PERFORMANCE
PHASE CHANGE MATERIALS
ALKANES
EMULSIFIERS
HEAT EXCHANGERS
HEAT TRANSFER FLUIDS
MIXTURES
PARTICLE SIZE
PIPES
PROGRESS REPORT
WATER
ADDITIVES
COOLING
DISPERSIONS
DOCUMENT TYPES
FLUIDS
HYDROCARBONS
HYDROGEN COMPOUNDS
MATERIALS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
SIZE
320603* - Energy Conservation
Consumption
& Utilization- Municipalities & Community Systems- Public Utilities- (1980-)
360602 - Other Materials- Structure & Phase Studies